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2018-02-09[IEPM] Introduce inline entry point markersAlexandre Oliva1-0/+1
Output DW_AT_entry_pc based on markers. Introduce DW_AT_GNU_entry_view as a DWARF extension. If views are enabled are we're not in strict compliance mode, output DW_AT_GNU_entry_view if it might be nonzero. This patch depends on SFN and LVU patchsets, and on the IEPM patch that introduces the inline_entry debug hook. for include/ChangeLog * dwarf2.def (DW_AT_GNU_entry_view): New. for gcc/ChangeLog * cfgexpand.c (expand_gimple_basic_block): Handle inline entry markers. * dwarf2out.c (dwarf2_debug_hooks): Enable inline_entry hook. (BLOCK_INLINE_ENTRY_LABEL): New. (dwarf2out_var_location): Disregard inline entry markers. (inline_entry_data): New struct. (inline_entry_data_hasher): New hashtable type. (inline_entry_data_hasher::hash): New. (inline_entry_data_hasher::equal): New. (inline_entry_data_table): New variable. (add_high_low_attributes): Add DW_AT_entry_pc and DW_AT_GNU_entry_view attributes if a pending entry is found in inline_entry_data_table. Add old entry_pc attribute only if debug nonbinding markers are disabled. (gen_inlined_subroutine_die): Set BLOCK_DIE if nonbinding markers are enabled. (block_within_block_p, dwarf2out_inline_entry): New. (dwarf2out_finish): Check that no entries remained in inline_entry_data_table. * final.c (reemit_insn_block_notes): Handle inline entry notes. (final_scan_insn, notice_source_line): Likewise. (rest_of_clean_state): Skip inline entry markers. * gimple-pretty-print.c (dump_gimple_debug): Handle inline entry markers. * gimple.c (gimple_build_debug_inline_entry): New. * gimple.h (enum gimple_debug_subcode): Add GIMPLE_DEBUG_INLINE_ENTRY. (gimple_build_debug_inline_entry): Declare. (gimple_debug_inline_entry_p): New. (gimple_debug_nonbind_marker_p): Adjust. * insn-notes.def (INLINE_ENTRY): New. * print-rtl.c (rtx_writer::print_rtx_operand_code_0): Handle inline entry marker notes. (print_insn): Likewise. * rtl.h (NOTE_MARKER_P): Add INLINE_ENTRY support. (INSN_DEBUG_MARKER_KIND): Likewise. (GEN_RTX_DEBUG_MARKER_INLINE_ENTRY_PAT): New. * tree-inline.c (expand_call_inline): Build and insert debug_inline_entry stmt. * tree-ssa-live.c (remove_unused_scope_block_p): Preserve inline entry blocks early, if nonbind markers are enabled. (dump_scope_block): Dump fragment info. * var-tracking.c (reemit_marker_as_note): Handle inline entry note. * doc/gimple.texi (gimple_debug_inline_entry_p): New. (gimple_build_debug_inline_entry): New. * doc/invoke.texi (gstatement-frontiers, gno-statement-frontiers): Enable/disable inline entry points too. * doc/rtl.texi (NOTE_INSN_INLINE_ENTRY): New. (DEBUG_INSN): Describe inline entry markers. From-SVN: r257511
2018-02-09[LVU] Introduce location viewsAlexandre Oliva1-0/+1
This patch introduces an option to enable the generation of location views along with location lists. The exact format depends on the DWARF version: it can be a separate attribute (DW_AT_GNU_locviews) or (DW_LLE_view_pair) entries in DWARF5+ loclists. Line number tables are also affected. If the assembler is found, at compiler build time, to support .loc views, we use them and assembler-computed view labels, otherwise we output compiler-generated line number programs with conservatively-computed view labels. In either case, we output view information next to line number changes when verbose assembly output is requested. This patch requires an LVU patch that modifies the exported API of final_scan_insn. It also expects the entire SFN patchset to be installed first, although SFN is not a requirement for LVU. for include/ChangeLog * dwarf2.def (DW_AT_GNU_locviews): New. * dwarf2.h (enum dwarf_location_list_entry_type): Add DW_LLE_GNU_view_pair. (DW_LLE_view_pair): Define. for gcc/ChangeLog * common.opt (gvariable-location-views): New. (gvariable-location-views=incompat5): New. * config.in: Rebuilt. * configure: Rebuilt. * configure.ac: Test assembler for view support. * dwarf2asm.c (dw2_asm_output_symname_uleb128): New. * dwarf2asm.h (dw2_asm_output_symname_uleb128): Declare. * dwarf2out.c (var_loc_view): New typedef. (struct dw_loc_list_struct): Add vl_symbol, vbegin, vend. (dwarf2out_locviews_in_attribute): New. (dwarf2out_locviews_in_loclist): New. (dw_val_equal_p): Compare val_view_list of dw_val_class_view_lists. (enum dw_line_info_opcode): Add LI_adv_address. (struct dw_line_info_table): Add view. (RESET_NEXT_VIEW, RESETTING_VIEW_P): New macros. (DWARF2_ASM_VIEW_DEBUG_INFO): Define default. (zero_view_p): New variable. (ZERO_VIEW_P): New macro. (output_asm_line_debug_info): New. (struct var_loc_node): Add view. (add_AT_view_list, AT_loc_list): New. (add_var_loc_to_decl): Add view param. Test it against last. (new_loc_list): Add view params. Record them. (AT_loc_list_ptr): Handle loc and view lists. (view_list_to_loc_list_val_node): New. (print_dw_val): Handle dw_val_class_view_list. (size_of_die): Likewise. (value_format): Likewise. (loc_list_has_views): New. (gen_llsym): Set vl_symbol too. (maybe_gen_llsym, skip_loc_list_entry): New. (dwarf2out_maybe_output_loclist_view_pair): New. (output_loc_list): Output view list or entries too. (output_view_list_offset): New. (output_die): Handle dw_val_class_view_list. (output_dwarf_version): New. (output_compilation_unit_header): Use it. (output_skeleton_debug_sections): Likewise. (output_rnglists, output_line_info): Likewise. (output_pubnames, output_aranges): Update version comments. (output_one_line_info_table): Output view numbers in asm comments. (dw_loc_list): Determine current endview, pass it to new_loc_list. Call maybe_gen_llsym. (loc_list_from_tree_1): Adjust. (add_AT_location_description): Create view list attribute if needed, check it's absent otherwise. (convert_cfa_to_fb_loc_list): Adjust. (maybe_emit_file): Call output_asm_line_debug_info for test. (dwarf2out_var_location): Reset views as needed. Precompute add_var_loc_to_decl args. Call get_attr_min_length only if we have the attribute. Set view. (new_line_info_table): Reset next view. (set_cur_line_info_table): Call output_asm_line_debug_info for test. (dwarf2out_source_line): Likewise. Output view resets and labels to the assembler, or select appropriate line info opcodes. (prune_unused_types_walk_attribs): Handle dw_val_class_view_list. (optimize_string_length): Catch it. Adjust. (resolve_addr): Copy vl_symbol along with ll_symbol. Handle dw_val_class_view_list, and remove it if no longer needed. (hash_loc_list): Hash view numbers. (loc_list_hasher::equal): Compare them. (optimize_location_lists): Check whether a view list symbol is needed, and whether the locview attribute is present, and whether they match. Remove the locview attribute if no longer needed. (index_location_lists): Call skip_loc_list_entry for test. (dwarf2out_finish): Call output_asm_line_debug_info for test. Use output_dwarf_version. * dwarf2out.h (enum dw_val_class): Add dw_val_class_view_list. (struct dw_val_node): Add val_view_list. * final.c (SEEN_NEXT_VIEW): New. (set_next_view_needed): New. (clear_next_view_needed): New. (maybe_output_next_view): New. (final_start_function): Rename to... (final_start_function_1): ... this. Take pointer to FIRST, add SEEN parameter. Emit param bindings in the initial view. (final_start_function): Reintroduce SEEN-less interface. (final): Rename to... (final_1): ... this. Take SEEN parameter. Output final pending next view at the end. (final): Reintroduce seen-less interface. (final_scan_insn): Output pending next view before switching sections or ending a block. Mark the next view as needed when outputting variable locations. Notify debug backend of section changes, and of location view changes. (rest_of_handle_final): Adjust. * toplev.c (process_options): Autodetect value for debug variable location views option. Warn on incompat5 without -gdwarf-5. * doc/invoke.texi (gvariable-location-views): New. (gvariable-location-views=incompat5): New. (gno-variable-location-views): New. From-SVN: r257510
2018-01-03Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r256169
2017-09-12Add DW_CFA_AARCH64_negate_ra_state to dwarf2.def/h and dwarfnames.cJiong Wang1-0/+1
A new vendor CFA DW_CFA_AARCH64_negate_ra_state was introduced for ARMv8.3-A return address signing, it is multiplexing DW_CFA_GNU_window_save in CFA vendor extension space. This patch adds necessary code to make it available to external, the GDB patch (https://sourceware.org/ml/gdb-patches/2017-08/msg00215.html) is intended to use it. A new DW_CFA_DUP for it is added in dwarf2.def. The use of DW_CFA_DUP is to avoid duplicated case value issue when included in libiberty/dwarfnames. Native x86 builds OK to make sure no macro expanding errors. Committed on behalf of Jiong Wang. include/ * dwarf2.def (DW_CFA_AARCH64_negate_ra_state): New DW_CFA_DUP. * dwarf2.h (DW_CFA_DUP): New define. libiberty/ * dwarfnames.c (DW_CFA_DUP): New define. From-SVN: r252037
2017-07-02include/ChangeLogJan Kratochvil1-0/+12
2017-07-02 Jan Kratochvil <jan.kratochvil@redhat.com> * dwarf2.def (DW_IDX_compile_unit, DW_IDX_type_unit, DW_IDX_die_offset) (DW_IDX_parent, DW_IDX_type_hash, DW_IDX_lo_user, DW_IDX_hi_user) (DW_IDX_GNU_internal, DW_IDX_GNU_external): New. * dwarf2.h (DW_IDX, DW_IDX_DUP, DW_FIRST_IDX, DW_END_IDX): New. (enum dwarf_name_index_attribute): Remove. (get_DW_IDX_name): New declaration. libiberty/ChangeLog 2017-07-02 Jan Kratochvil <jan.kratochvil@redhat.com> * dwarfnames.c (DW_FIRST_IDX, DW_END_IDX, DW_IDX, DW_IDX_DUP): New. From-SVN: r249883
2017-02-25re PR debug/77589 (fortran: Missing DW_AT_byte_stride for an array record ↵Jakub Jelinek1-0/+3
field selection) PR debug/77589 include/ * dwarf2.def (DW_OP_GNU_variable_value): New opcode. gcc/ * dwarf2out.c (struct dw_loc_list_struct): Add noted_variable_value bitfield. (size_of_loc_descr): Handle DW_OP_GNU_variable_value. (output_loc_operands): Handle DW_OP_call_ref and DW_OP_GNU_variable_value. (struct variable_value_struct): New type. (struct variable_value_hasher): Likewise. (variable_value_hash): New variable. (string_types): Remove. (copy_loc_descr): New function. (add_loc_descr_to_each): Clarify comment. Use copy_loc_descr. (prepend_loc_descr_to_each): New function. (add_loc_list): Fix comment typo. Use prepend_loc_descr_to_each instead of add_loc_descr_to_each if the first argument is single location list and the second has multiple. (resolve_args_picking_1): Handle DW_OP_GNU_variable_value. (loc_list_from_tree_1): For early_dwarf, emit DW_OP_GNU_variable_value when looking for variable value which doesn't have other location info. (loc_list_from_tree): Formatting fix. (gen_array_type_die): Simplify DW_AT_string_length handling. (adjust_string_types): Remove. (gen_subprogram_die): Don't call adjust_string_types nor test/set string_types. Call resolve_variable_values. (prune_unused_types_walk_loc_descr): Handle DW_OP_GNU_variable_value. (resolve_addr_in_expr): Likewise. Add A argument. (copy_deref_exprloc): Remove deref argument. Adjust for the original expression being DW_OP_GNU_variable_value with optionally DW_OP_stack_value after it instead of DW_OP_call4 with DW_OP_deref optionally after it. (optimize_string_length): Rework for DW_OP_GNU_variable_value. (resolve_addr): Adjust optimize_string_length and resolve_addr_in_expr callers. Set remove_AT_byte_size if removing DW_AT_string_length. (variable_value_hasher::hash, variable_value_hasher::equal): New methods. (resolve_variable_value_in_expr, resolve_variable_value, resolve_variable_values, note_variable_value_in_expr, note_variable_value): New functions. (dwarf2out_early_finish): Call note_variable_value on all toplevel DIEs. From-SVN: r245733
2017-01-04[DWARF] New DWARF operation "DW_OP_AARCH64_operation" for AArch64Richard Earnshaw1-1/+8
include/ * dwarf2.def (DW_OP_AARCH64_operation): Reserve the number 0xea. (DW_CFA_GNU_window_save): Comments the multiplexing on AArch64. Co-Authored-By: Jiong Wang <jiong.wang@arm.com> From-SVN: r244055
2017-01-04Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r244052
2016-12-21dwarf2.def (DW_FORM_ref_sup): Renamed to ...Jakub Jelinek1-1/+2
* dwarf2.def (DW_FORM_ref_sup): Renamed to ... (DW_FORM_ref_sup4): ... this. New form. (DW_FORM_ref_sup8): New form. From-SVN: r243876
2016-10-17dwarf2.h (enum dwarf_calling_convention): Add new DWARF5 calling convention ↵Jakub Jelinek1-0/+56
codes. * dwarf2.h (enum dwarf_calling_convention): Add new DWARF5 calling convention codes. (enum dwarf_line_number_content_type): New. (enum dwarf_location_list_entry_type): Add DWARF5 DW_LLE_* codes. (enum dwarf_source_language): Add new DWARF5 DW_LANG_* codes. (enum dwarf_macro_record_type): Add DWARF5 DW_MACRO_* codes. (enum dwarf_name_index_attribute): New. (enum dwarf_range_list_entry): New. (enum dwarf_unit_type): New. * dwarf2.def: Add new DWARF5 DW_TAG_*, DW_FORM_*, DW_AT_*, DW_OP_* and DW_ATE_* entries. From-SVN: r241272
2016-08-15dwarf2.def (DW_AT_string_length_bit_size, [...]): New attributes.Jakub Jelinek1-0/+2
* dwarf2.def (DW_AT_string_length_bit_size, DW_AT_string_length_byte_size): New attributes. * dwarf2out.c (struct checksum_attributes): Add at_string_length_bit_size and at_string_length_byte_size fields. (collect_checksum_attributes): Handle DW_AT_string_length_bit_size and DW_AT_string_length_byte_size. (die_checksum_ordered): Handle at_string_length_bit_size and at_string_length_byte_size. (gen_array_type_die): For dwarf_version >= 5 emit DW_AT_string_length_byte_size instead of DW_AT_byte_size. (adjust_string_types): For dwarf_version >= 5 remove DW_AT_string_length_byte_size instead of DW_AT_byte_size. (resolve_addr): Likewise. From-SVN: r239470
2016-08-12[PR63240] generate debug info for defaulted member functionsAlexandre Oliva1-0/+2
This implements <http://dwarfstd.org/ShowIssue.php?issue=141215.3>, a proposal already accepted for inclusion in DWARF-5, but using DW_AT_GNU_defaulted instead of DW_AT_defaulted as the attribute name, because the attribute id for DW_AT_defaulted is not yet publicly available. for include/ChangeLog PR debug/63240 * dwarf2.def (DW_AT_deleted, DW_AT_defaulted): New. * dwarf2.h (enu dwarf_defaulted_attribute): New. for gcc/ChangeLog PR debug/63240 * langhooks-def.h (LANG_HOOKS_FUNCTION_DECL_EXPLICIT_P): Const_tree-ify. (LANG_HOOKS_FUNCTION_DECL_DELETED_P): Likewise. (LANG_HOOKS_FUNCTION_DECL_DEFAULTED): Set default. (LANG_HOOKS_DECLS): Add it. * langhooks.h (struct lang_hooks_for_decls): Add function_decl_defaulted. Const_tree-ify function_decl_explicit_p and function_decl_deleted_p. * dwarf2out.c (gen_subprogram_die): Add DW_AT_defaulted attribute. Add DW_AT_deleted instead of DW_AT_GNU_deleted, also at strict DWARF v5. for gcc/cp/ChangeLog PR debug/63240 * cp-objcp-common.c (cp_function_decl_defaulted): New. (cp_function_decl_explicit_p): Const_tree-ify. (cp_function_decl_deleted_p): Likewise. * cp-objcp-common.h (cp_function_decl_defaulted): Declare. (cp_function_decl_explicit_p): Const_tree-ify. (cp_function_decl_deleted_p): Likewise. (LANG_HOOKS_FUNCTION_DECL_DEFAULTED): Redefine. for gcc/testsuite/ChangeLog PR debug/63240 * g++.dg/debug/dwarf2/defaulted-member-function-1.C: New. * g++.dg/debug/dwarf2/defaulted-member-function-2.C: New. * g++.dg/debug/dwarf2/defaulted-member-function-3.C: New. * g++.dg/debug/dwarf2/deleted-member-function.C: Expect DW_AT_deleted. From-SVN: r239403
2015-08-14DWARF2: add extensions to handle biased typesPierre-Marie de Rodat1-0/+3
include/ChangeLog: * dwarf2.def (DW_AT_GNU_bias): New attribute. From-SVN: r226888
2015-08-14DWARF2: add extensions to handle fixed point typesPierre-Marie de Rodat1-0/+4
include/ChangeLog: * dwarf2.def (DW_AT_GNU_numerator, DW_AT_GNU_denominator): New attributes. From-SVN: r226887
2015-07-14Update copyright year in includeH.J. Lu1-3/+1
From-SVN: r225781
2014-12-08DWARFv5 Emit DW_TAG_atomic_type for C11 _Atomic.Mark Wielaard1-0/+2
This implements the DW_TAG_atomic_type for C11 _Atomic proposal as adopted in the latest DWARF5 draft. http://dwarfstd.org/ShowIssue.php?issue=131112.1 gcc/ChangeLog PR debug/60782 * dwarf2out.c (modified_type_die): Handle TYPE_QUAL_ATOMIC. gcc/testsuite/ChangeLog PR debug/60782 * gcc.dg/debug/dwarf2/atomic.c: New test. * gcc.dg/debug/dwarf2/stacked-qualified-types-3.c: Likewise. include/ChangeLog PR debug/60782 * dwarf2.def: Add DWARFv5 DW_TAG_atomic_type. From-SVN: r218496
2014-11-26DWARF add DW_AT_noreturn on noreturn function subprogram.Mark Wielaard1-0/+2
This implements the DWARFv5 noreturn proposal: http://dwarfstd.org/ShowIssue.php?issue=140331.1 TREE_THIS_VOLATILE on a FUNCTION_DECL node means the function does not return normally. This catches the traditional noreturn GNU attribute, the C11 _Noreturn keyword and the C++11 [[noreturn]] attribute. This relies on the DW_AT_noreturn constant defined in the DWARFv5 DRAFT: http://www.dwarfstd.org/doc/dwarf5.20141029.pdf gcc/ChangeLog * dwarf2out.c (gen_subprogram_die): Add DW_AT_noreturn when the function decl has TREE_THIS_VOLATILE. gcc/testsuite/ChangeLog * g++.dg/debug/dwarf2/noreturn-function.C: New test. * gcc.dg/debug/dwarf2/noreturn-function-attribute.c: Likewise. * gcc.dg/debug/dwarf2/noreturn-function-keyword.c: Likewise. include/ChangeLog * dwarf2.def (DW_AT_noreturn): New DWARF5 attribute. From-SVN: r218075
2014-11-14* dwarf2.def (DW_AT_APPLE_optimized, DW_AT_APPLE_flags)Shinichiro Hamaji1-0/+14
(DW_AT_APPLE_isa, DW_AT_APPLE_block) (DW_AT_APPLE_major_runtime_vers, DW_AT_APPLE_runtime_class) (DW_AT_APPLE_omit_frame_ptr, DW_AT_APPLE_property_name) (DW_AT_APPLE_property_getter, DW_AT_APPLE_property_setter) (DW_AT_APPLE_property_attribute, DW_AT_APPLE_objc_complete_type) (DW_AT_APPLE_property): New macros. From-SVN: r217578
2014-10-05PR debug/63239 Add DWARF representation for C++11 deleted member function.Mark Wielaard1-0/+2
include/ChangeLog * dwarf2.def (DW_AT_GNU_deleted): New attribute. gcc/ChangeLog * dwarf2out.c (gen_subprogram_die): When a member function is explicitly deleted then add a DW_AT_GNU_deleted attribute. * langhooks.h (struct lang_hooks_for_decls): Add function_decl_deleted_p langhook. * langhooks-def.h (LANG_HOOKS_FUNCTION_DECL_DELETED_P): Define. (LANG_HOOKS_DECLS): Add LANG_HOOKS_FUNCTION_DECL_DELETED_P. gcc/cp/ChangeLog * cp-objcp-common.h (LANG_HOOKS_FUNCTION_DECL_DELETED_P): Define. (cp_function_decl_deleted_p): New prototype. * cp-objcp-common.c (cp_function_deleted_p): New function. gcc/testsuite/ChangeLog * g++.dg/debug/dwarf2/deleted-member-function.C: New testcase. From-SVN: r215901
2013-08-19dwarf2.def (DW_AT_GNU_discriminator): New attribute.Dehao Chen1-0/+3
2013-08-19 Dehao Chen <dehao@google.com> * dwarf2.def (DW_AT_GNU_discriminator): New attribute. From-SVN: r201855
2012-09-06dwarf2.def: Edit comment.Cary Coutant1-1/+1
2012-09-06 Cary Coutant <ccoutant@google.com> include/ * dwarf2.def: Edit comment. From-SVN: r191046
2012-06-18* dwarf2.def (DW_OP): Add DW_OP_GNU_const_index.Doug Evans1-0/+1
From-SVN: r188759
2012-06-08dwarf2.def (DW_FORM_GNU_ref_alt, [...]): New forms.Jakub Jelinek1-0/+4
* dwarf2.def (DW_FORM_GNU_ref_alt, DW_FORM_GNU_strp_alt): New forms. * dwarf2.h (enum dwarf_macro_record_type): Add DW_MACRO_GNU_define_indirect_alt, DW_MACRO_GNU_undef_indirect_alt and DW_MACRO_GNU_transparent_include_alt. From-SVN: r188337
2012-05-20dwarf2.def: Update comment re: UPC extensions to reference DWARF4 specification.Gary Funck1-1/+1
toplevel/include/ * dwarf2.def: Update comment re: UPC extensions to reference DWARF4 specification. From-SVN: r187689
2012-05-02dwarf2.def: Remove DW_FORM_GNU_ref_index, replace DW_AT_GNU_ref_base with ↵Cary Coutant1-2/+1
DW_AT_GNU_ranges_base. include/ * dwarf2.def: Remove DW_FORM_GNU_ref_index, replace DW_AT_GNU_ref_base with DW_AT_GNU_ranges_base. From-SVN: r187061
2012-04-28* dwarf2.def (DW_OP): Add DW_OP_GNU_addr_index.Doug Evans1-0/+2
From-SVN: r186934
2012-04-27dwarf2out.c (dwarf_stack_op_name): Use get_DW_OP_name.Tom Tromey1-0/+679
gcc * dwarf2out.c (dwarf_stack_op_name): Use get_DW_OP_name. (dwarf_tag_name): Use get_DW_TAG_name. (dwarf_attr_name): Use get_DW_AT_name. (dwarf_form_name): Use get_DW_FORM_name. * dwarf2cfi.c (dwarf_cfi_name): Use get_DW_CFA_name. include * dwarf2.h (enum dwarf_tag, enum dwarf_form, enum dwarf_attribute) (enum dwarf_location_atom, enum dwarf_type, enum dwarf_call_frame_info): Remove. (DW_TAG, DW_TAG_DUP, DW_FORM, DW_AT, DW_AT_DUP, DW_OP) (DW_OP_DUP, DW_ATE, DW_ATE_DUP, DW_CFA): New macros. Include dwarf2.def. (get_DW_TAG_name, get_DW_AT_name, get_DW_FORM_name) (get_DW_OP_name, get_DW_ATE_name): Declare. * dwarf2.def: New file, from dwarf2.h. libiberty * dwarfnames.c: New file. * Makefile.in (CFILES): Add dwarfnames. (REQUIRED_OFILES): Add dwarfnames. (./dwarfnames.$(objext)): New target. From-SVN: r186908
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